550556046 has 72 divisors (see below), whose sum is σ = 1268364240. Its totient is φ = 172564992.

The previous prime is 550556021. The next prime is 550556053. The reversal of 550556046 is 640655055.

It is a happy number.

550556046 is a `hidden beast` number, since 5 + 50 + 5 + 560 + 46 = 666.

It is a super-2 number, since 2×550556046² = 606223919574308232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 550556046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1253895 + ... + 1254333.

It is an arithmetic number, because the mean of its divisors is an integer number (17616170).

Almost surely, 2^550556046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550556046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634182120).

550556046 is an abundant number, since it is smaller than the sum of its proper divisors (717808194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550556046 is a wasteful number, since it uses less digits than its factorization.

550556046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 550556046 is about 23463.9307448688. The cubic root of 550556046 is about 819.5972868867.

Subtracting 550556046 from its reverse (640655055), we obtain a palindrome (90099009).

The spelling of 550556046 in words is "five hundred fifty million, five hundred fifty-six thousand, forty-six".